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采用具有纤铁矿型层状结构的层状钛酸盐K0 .8Ti1 .73Li0 .27O4·nH2O(KTLO)制备出层状H+-型钛酸盐H1.07Ti1.73O4·nH2O( HTO) ,并将其以之作为前驱物,将HTO前驱物粉末通过与0 .1 M的n-丙胺反应剥落成其结构单元层的纳米片,接着采用HTO纳米片胶体溶液通过旋转涂覆工艺在金属基体Ti、Pt或者Au上制备出择优取向的HTO薄膜,随后加热至200 ～400 ℃.在A(OH)2(A=Ba ,Sr)溶液中于150 ～350 ℃温度范围内水热处理HTO前驱物薄膜成功制备出具有高度[110]择优取向的ATi O3(A=Ba ,Sr)薄膜(取向因子≈1 .0) .钛酸盐薄膜择优取向的方向受控于HTO前驱物薄膜的结构且不依赖于基体的性质.
Layered H + - type titanate H1.07Ti1.73O4 · nH2O (HTO) was prepared by using layered titanate K0.8Ti1.73Li0.27O4 · nH2O (KTLO) As a precursor, the HTO precursor powder is peeled off into the nanosheets of its structural unit layer through reaction with 0.1 M n-propylamine, and then the nanosheet of the HTO nanosheet is subjected to a spin coating process on the metal substrate Ti, Pt or Au, and then heated to 200-400 ° C. The HTO precursor film was successfully hydrothermally treated in a solution of A (OH) 2 (A = Ba, Sr) at a temperature of 150-350 ° C. An ATiO3 (A = Ba, Sr) thin film (orientation factor ≈1.0) with a preferred [110] orientation was prepared.The orientation of the preferred orientation of the titanate film is controlled by the structure of the HTO precursor film and is independent of The nature of the matrix.